Help with Button ID

[Baldingboy]

My Buddy found this Button at a site dating back to the late 1700's. It's about nickel/quarter size and has a 44 on the face. Any idea of the age and what the 44 designates? Any help appreciated.

Baldingboy

 

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[Baldingboy]

Heres a back view.

 

[jewelerguy]

looks like British 44th regiment of foot officer's button